@article{CMJ_2003__53_2_a4,
     author = {V\u{a}lcan, Dumitru},
     title = {Modules with the direct summand sum property},
     journal = {Czechoslovak Mathematical Journal},
     pages = {277--287},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {2003},
     mrnumber = {1983451},
     zbl = {1027.16005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2003__53_2_a4/}
}